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Richard J Mack, LCSW

Clinical Social Worker in New York, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1700820792

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Registry record

Entity type Individual (Type 1)
Name Richard J Mack
Credential LCSW
Sex Male
Practice address 50 W 23rd St, 9th Floor, New York, NY, 10010
Phone (212) 989-2990
Fax (212) 792-6058
Enumeration date Jun 16, 2006
Last updated in NPPES Oct 19, 2008

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 73 076339 (NY) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Richard Mack?
The National Provider Identifier (NPI) for Richard Mack is 1700820792, a Type 1 (individual) record in the CMS NPPES registry.
Where does Richard Mack practice?
The practice location on file with NPPES is in New York, NY. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-19.